The capabilities of smart phones sometimes border on fantasy. It is a means of accessing the Internet, a GPS navigator, and a source of all kinds of entertainment.
And smartphones can also be used to store confidential information - passwords, phone numbers, credit cards, etc.
Smart App Protector
Less well-known, but no less reliable means of protecting information on your device from prying eyes. Unlike AppLock, Smart App Protector has a set of additional control tools.
The most interesting of them is the observer mode - when working in this mode, the application monitors unsuccessful attempts to unlock, capturing images of a potential "burglar" with the front camera.
Supported by the use of text and picture passwords, prevention of shutdown and auto-rotation of the screen, locking at a specified time, as well as backup and restore the list of applications.
Perfect app protector
Visidon AppLock
Unlike the programs described above, Visidon AppLock uses an image (photo) of the owner's face as a password. Unfortunately, the technology of face recognition in this application has not been brought to mind. According to the results of independent tests, the program crashed more than once. In some cases, Visidon AppLock did not recognize the owner, in others it missed the stranger.
Smart Lock
The last on our list is Smart Lock - a good, judging by user reviews, program for blocking access to applications and photos. Key features of the program include blocking applications, protecting against USB connections, sending notifications when the phone number has been changed, preventing automatic screen rotation, starting SMS protection service, organizing photos, and backing up and restoring settings.
Outcome
I think that's enough.
All five of these applications come in two versions - commercial and free. Here are the free versions.
In addition to minor functional limitations of the functionality, almost all of them use advertising.
Now for efficiency and usability. Personally, I would vote in favor of only two of them, namely Perfect App Protector and AppLock.
Android smartphones are widely used not only as a means of communication, but also for Internet access, as a GPS navigator and various entertainment. Also, smartphone owners can use them to hide and store personal data. To protect your smartphone from someone else's penetration, set a password or block certain information, for example, applications. For this, a variety of blockers are used. Consider a few popular ones.
To protect information, you can use both built-in tools and external utilities. The former can completely block the device, the latter can protect individual data.
A powerful and simple tool to protect applications on android. AppLock will help to block access to any of them, protect with a password. You can protect individual files, for example, pictures from the Gallery. Blocks outgoing and incoming, automatically blocks any data in a certain period of time, protects from deletion, activates strong self-defense.
SmartAppProtector
Also a reliable tool for blocking files on android. Has various tools to control protection. For example, there is a monitoring mode that monitors attempts to release a lock. A graphic and text password, blocking for a certain period of time, backup and recovery are used.
Helps block access to images and other information. Its main features: protection against unauthorized connection via USB, data blocking, sending notifications about changing the phone number, starting protection via SMS, restoring settings, the ability to create backups.
VisidonAppLock
For the password, she uses the face of the owner of the smartphone. The downside is that it has poorly developed technology for face recognition. According to reviews, it is not the most reliable, as failures were recorded. Protection is unreliable, since it may not recognize the owner and at the same time let an outsider pass.
PerfectAppProtector
It is one of the best products for protecting devices on Android, it helps to block access to various information and settings. You can use it to block the screen rotation, protect it from connecting via a USB port, use a graphic password and block the sending of SMS.
Lock Master
A good program that will allow you to lock files on your android using password protection in the form of numbers or symbols. Thus, you can block messages, settings, contacts and other data from other people. The Lock Wizard does not interfere with the usual blocking and uninstallation of programs in the standard way using the system "Parameters".
With one click, you can block any application without re-entering passwords on return.
An excellent program for blocking and protecting against someone else's interference. It can block various data, programs and pictures, put passwords on them. LOCKit has many advantages:
- Protecting pictures and videos with passwords;
- Blocking any programs on a smartphone with one click, you can quickly block and just as quickly unblock any application on an android;
- To unblock, you can use the password pattern or enter the PIN;
- There are many free themes;
- Notification cleaner;
- Convenient interface;
- Special power saving mode, with which you can save up to 50% of the battery charge;
- Hide and encrypt any photos and videos.
Lockdown
With it, you can password-protect pictures, SMS, emails and other information. The program will help restrict access to files using different keys. They can be locked in various ways: classic, with a pattern, calculator.
An intuitive and convenient application with a Russian interface. Locking and unlocking is performed using the main screen. You can also set a password for SMS, Whatsapp, SnapChat, Gmail, Facebook, Instagram, Line, Viber, Vkontakte, etc. Lockdown has the following features: support for multi-password and several separate passwords, blocking by SMS, no ads, temporary pin-code, russified version, recovery from the list to Google-drive or sd-card, creating backups, monitoring function, automatic blocking by geolocation.
Protect private pictures and videos from prying eyes. To hide content, set a password to it. To protect the photos, you can mark the selected images - they will become invisible in the general view, and they will not be in the gallery. The program has a number of features:
- Quickly and efficiently hides any videos and photos;
- Suitable for phones and tablets;
- Allows you to create your personal albums and pictures directly through the application;
- There is quick access via a pin code;
- Private viewing of hidden photos and videos in full screen;
- File enlargement and rotation;
- The presence of a slide show;
- Adding pictures via Facebook;
- Application of the secure dispatch function.
Photo safe
Helps to reliably hide any photos. It is used to hide pictures and photos using a secret PIN-code. Special encryption will help to massively hide personal pictures and prevent an intruder from seeing them. Perfectly optimized for, tablets and mobile devices. Hidden photos can be viewed as a slideshow, rotated and enlarged.
Video safe
It will help to hide any video from the gallery using a password that is easy to set. You will need to indicate your mail - the required code will be sent to it. The program is easy to operate and will allow you to quickly and reliably hide any video files. Helps to encrypt video files using 128-bit AES encryption. It has convenient and simple controls, helps you easily hide any videos. Videos can be categorized into convenient categories. If you lose your PIN code, you can easily restore it. Developed in Russian.
LEO PrivacyGuard - AppLock
Will close access to secret and personal data, preserve confidentiality and reliably protect files. Able to automatically read the location and enable a suitable blocking scheme. You can put and unblock with one click. It will hide personal data, videos and photos well. You can create groups with different access. Data is easy to copy, delete and manage. LEO PrivacyGuard uses up RAM to a minimum.
HidePictures & Videos - Vaulty
It will help block access to pictures that you do not want to show to others. You can create a personal gallery, create backups, protect data with a text password, filter pictures and videos, create and watch slideshows, sort photos by date, title, type or size.
LockerMaster
It has many themes for design, all of them are categorized. Lockscreen has ample opportunities, a convenient mechanism for unlocking the screen. You can create your own unique themes and share them with other users, view others. The program is popular and the number of its users is constantly growing. This blocker has the following features: a functional editor with which you can create themes for the screen, support for high-resolution images, a large selection of unlocking methods, stylish design, animations and decorations, displaying incoming and calls, and decorating the base every day.
There are many programs for blocking different data that the user wants to hide. You can use a universal blocker or try or pick one with specific functionality to work with specific types of information.
I think that almost every one of us, at least once, had a desire to protect one or another application on our tablet or smartphone from prying eyes. If you are one of those who do not want strangers to be able to read your SMS, emails, view photos, run Internet banking applications, etc., and for some other reason does not want or cannot set a password on the tablet lock screen, or smartphone, then I advise you to take a closer look at the Lockdown Pro application that recently appeared in the Google Play Store.
As its developer confidently states, Lockdown Pro is the best tool to set a password to launch any application such as SMS, Gmail, Facebook, Whatsapp, SnapChat, Instagram, Viber, Line, etc. Moreover, with the help of Lockdown Pro you can prevent unauthorized installation and removal of applications, block incoming calls, block applications via SMS, automatically block (if desired) all applications installed on the device, turn on the blocking mode in a certain place (when leaving home, on work, etc.) or when connected to a specific WiFi network. In order for the one who tries to launch the blocked application to not guess about the presence of protection on your smartphone or tablet, you can enable a false error message when starting them.
You can protect applications from uninvited guests using a password, a pattern, a mathematical example (by typing 6x7 + 5-4 on a calculator) or a dynamic pin-code that changes depending on the current time (for example, at 1456 it will be 1456 or 6541 when set to invert mode).
For added security, you can hide the Lockdown Pro icon from the app drawer. After that, to start it, you will need to dial ** ## 123 ** ## (default) in the dialer. You can change this code to any other. And finally, you can set when the application lock will be triggered: after turning off the screen or after a certain time interval (30 seconds, 1 minute, 2 minutes), which allows you to save you from constantly entering a password while using your smartphone or tablet.
The application is very easy to use. Its interface is simple, intuitive and, which is important for many of us, is almost completely Russified. I think now you understand why the developer is so confident in his application. And indeed - he has something to be proud of.
Download Lockdown App Lock on Android you can follow the link below.
Setting a lock code on some apps is a great way to improve the security of your device. App Lock makes it as easy as changing your PIN. Many people strongly recommend setting a lock code on the entire device, but sometimes this can create a number of inconveniences.
How about forgetting to lock your device and only install a security code on those apps that you would like to hide from prying eyes? The Android App Lock (E-lock) makes this very easy. Although, you can also use the App Lock to lock the entire device, thus ensuring the maximum level of security. Still, the main feature of the application is that it will allow you to install the lock code on certain applications, thereby preventing unauthorized access to private information.
Setting up and using the free App Lock is very simple:
Step 1: First you need to install App Lock
from Android Market. The first time you launch the application, you will need to set a lock code and a security question to remember. 
Step 2: After configuring the required security settings, you can specify the applications that will require an access password. It is enough to move the switch next to the corresponding application to block the free launch of this application. 
Before exiting the application, there is one important function that it is advisable to activate. Switch to the "System Lock" tab and move the switch to the "Install / Uninstall" item. By doing this, you will prevent unauthorized deletion of the App Lock. If you do not activate this option, then the person who has your phone in their hands can safely remove the App Lock and gain access to your information. 
That's all. Now, to access the applications that you marked in the E-lock, you will need to enter the lock code you specified earlier.
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Many of us work at computers, and it so happens that we need to concentrate on an important task, but we just want to check for updates on social networks, read news on Twitter and generally surf various interesting sites.
These few applications for your computer will help you get it together and not be distracted by useless things. Editors site have already installed a couple.
Blocks distracting sites for a set amount of time
If you find yourself deep inside a funnel of witty comments on Facebook while you should be finishing your business plan, the Self-Control app comes to the rescue. Set it, for example, to four o'clock, and it will indicate that you are not there. No amount of restarts and reboots will knock him off his chosen path. If you already feel the attacks of impending panic, do not worry: you can always change the list of allowed and prohibited sites. Instead of completely denying yourself access to the Internet, you can selectively restrict the sites that distract you.
Keeps track of how you spend your time at the computer
This application not only looks nice, but also monitors everything that you do on the computer, then issuing some kind of attention audit. How much time do you spend in your browser? How many hours are in the mail program? What are you listening to on iTunes? TrackTime will create a beautiful timeline of your online life in all the colors of the rainbow. It is convenient to use it as a reminder to yourself: if you switch between programs and applications every day, with an interval of two minutes or less, then it seems that the problem has been found.
Increases focus while working on different tasks
Concentrate is just perfect when you need to switch between tasks that require different skills. Let's say you have several daily tasks that require different tools, such as writing, social media management, and event planning. Concentrate allows you to compose a different set of tools for each task. For example, when you activate Texts, the application automatically closes your mail and Internet browser, blocks Twitter, Facebook and YouTube, opens Microsoft Word and selects Away as the status of all messengers. There is also a convenient timer for concentration.
Synchronizes all scattered records and collects them in one place
For many, the hardest task when concentrating is getting all of their notes together. This app puts all your notes in a centralized place on your desktop, adds search functionality and syncs with Simplenote or WriteRoom on your iPhone. It doesn't seem like much, but it actually makes life a lot easier.
25 minutes of concentration on one task
This app is based on the principles of a time management technique in which you focus on one task for 25 minutes and then take a five minute break. FocusBooster combines a task list and a time management trainer: you make a list, and the app tracks the time you spend completing those tasks. After 25 minutes, it will remind you to take a break. This is a very simple way to train attention span without going overboard.
Limiting attention to one application at a time
When the application is turned on, only one task can be brought to the fore, and everything else will be hidden behind an almost opaque background. You can still easily navigate between tasks, Think just clears up space and helps focus on the main task (it also works great with FocusBooster).
Creates a workspace ideal for writing texts
If you are constantly writing texts, then it is very important to quickly remove all unnecessary from the desktop. FocusWriter recreates a text editor and blocks whatever is unnecessary on your screen, leaving only the words you type on a plain gray background. All menus (date, time, toolbar) are hidden until you hover over them. Despite its understated appearance, the FocusWriter retains valuable word processing features such as spell checking and word counting, as well as a very pleasant typewriter sound with every keystroke.
Anti-Social is a light version of Freedom internet blocker. In addition to completely blocking access to the Internet, Anti-Social blocks only well-known time stealers. Banned sites include Twitter, Facebook, Flickr, Digg, Reddit, YouTube, Hulu, Vimeo, and all standard email programs. The app is not too different from Self-Control (see above), except that it already includes a blacklist (which you can of course edit). If you are unable to cope with restricting access to the listed sites, you will have to restart your computer.
